He said this was required for “quality control”. He told her that the more she was prepared to do, the more money she would get.

The website’s claims to have a roster of hundreds of students could not be verified. The reporter asked for evidence that scholarships had been awarded and was told that she would have to come back to the flat with the man.

But the requirement for potential “scholars” to submit to a “practical assessment” raises fears that young women students may have been exploited.

The elaborately constructed site gives the appearance of operating in the grey area in Britain’s sex laws which allow escort agencies to function legitimately by offering introductions between clients and sex workers.

Rachel Griffin, director of the Suzy Lamplugh Trust, which promotes personal safety, said: “Meeting a complete stranger in private could be highly dangerous at any time but when it is in connection with a scheme like this, the risks are sky-high.” The National Union of Students accused those behind the website of seeking to “capitalise on the poverty and financial hardship of women students”.

SponsorAScholar.co.uk offers young women “up to 100% of your Tuition Fees” in return for two-hour sessions with men in hotel rooms or private flats up to four times per term.

“Because of the considerable sums of money our sponsors are offering in scholarship, they tell us that they have expectations of a high level of sexual intimacy with their chosen student,” the website says.

During the meeting between the “assessor” and our reporter – which our reporter insisted must begin in a public place, choosing a fast food restaurant in south London – the man said: “The more you’re prepared to do, the more interest you're going to get, obviously the more sponsorship amount you’re going to get for that.”

SponsorAScholar.co.uk uses a false company and VAT number belonging to the legitimate dating site Match.com. A spokesman for the company said: “The website is not affiliated with Match.com in any way and we are in the process of contacting them to legally require that all references to Match.com are removed immediately.”

SponsorAScholar.co.uk purports to be registered at the former address of a senior academic from a leading British university, and the man claiming to be the assessor used the lecturer’s name in the encounter with the reporter – as well as in email correspondence and on his answerphone message.

The academic, approached by The Independent last Friday, said he had no idea that the website had been registered to his name and former address. He did not recognise the man in our undercover footage. Yesterday he added that he had now contacted the police to report the matter.

The meeting took place at the Powis Street branch of McDonalds in Woolwich, south London, last Thursday at 6.45pm.

As other diners tucked into burgers, the “assessor”, who said he lived near Leicester, bought the reporter coffee and sought to reassure her that the prospective “sponsors” had been vetted and were safe to meet.

Our reporter asked the “assessor” whether the “sponsors” have health checks. He answered: “We do invite them to do that, not all of them choose to do that but you can choose to have protection or not have protection on that basis.”

He described the need for her to first of all have the “practical assessment” with him as like “quality control for us”, adding: “Whatever you put on your sheet what level of intimacy you’re prepared to go into, you and I will go through that today. We’ve got a questionnaire we’ll go through, your likes and dislikes and the kind of thing you’re comfortable doing.”

He added: “We have to do that, to make sure when we put you in front of your sponsor you’re confident in doing the things you said you would do.”

The man added: “You see what you’re trying to do is attract a certain level of sponsorship, you don’t want to go up there saying you know you’re not even going to hold hands type of thing… cause you’re not going to attract any interest at all.”

After the initial 10-minute meeting – which our reporter ended by saying that she would like to reconsider his proposal rather than immediately follow him to the nearby flat for the “practical” – the man walked back to a large block of flats around the corner where he said he was staying on the fifth floor.

SponsorAScholar.co.uk claims to have been operating since 2006, but the website was registered earlier this year.

The site claims to charge “sponsors” a £100 fee and to take three per cent commission from the final “scholarship” total.

When a male reporter approached the site as a potential sponsor, however, he was told there was a “waiting list” and would be contacted in the new year. By contrast the meeting with the woman reporter posing as the female student was immediately arranged.

The “assessor” said our reporter’s decision not to go back to the flat with him was “ok”, adding: “I’ve got other candidates I need to see this evening”, before asking again if she wanted to “do the questionnaire or stop now”.

After being told stop, he suggested meeting on 13 December in Stratford, south-east London: “If we don’t do it tonight I can’t fit you in until then.”

Attempts to confirm the true identity of the “assessor” have since proved unsuccessful.

The man was today no longer returning repeated telephone calls, emails or text messages from The Independent.

Kelley Temple, NUS Women’s Officer, said: “It appears to be… exploiting the fact that women students are in dire financial situations in pursuit of an education.”

SponsorAScholar.co.uk had been changed tonight to say simply: “Sorry website unavailable for maintenance”.